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| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Inorganic Chemists |
| Room No. |
401호 |
| Time |
THU 10:15-: |
| Code |
INOR.O-4 |
| Subject |
Smoothing the Transition from Iron-Oxygen Chemistry to Iron-Nitrogen Chemistry |
| Authors |
홍승우, 남원우1,*
숙명여자대학교 화학과, Korea
1이화여자대학교 화학과, Korea
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| Abstract |
Multiply bonded terminal oxo(O2–) and imido(NR2–) species of transition metals have been postulated as key intermediates in many enzymatic and synthetic oxidative transformations such as olefin epoxidation and aziridination and unreactive C-H bonds oxygenation and amination.For instance, high-valent iron-oxo species have been frequently invoked in the catalytic cycle of cytochrome P450 whereas high-valent iron-imido species have been considered as a potential intermediacy in Haber-Bosch process for dinitrogen reduction process. In both enzymatic and biomimetic studies, a number of high-valent iron-oxo species accommodating heme and nonheme systems have been isolated and spectroscopically investigated; however, their congeners, high-valent iron-imido species remained relatively scarce. Moreover, the fundamental challenge lies in inferring how high-valent iron-imido species incorporate nitrogen functionality into C-H bonds including kinet-ic and mechanistic studies. To date, transition metal imido complexes such as titanium, manganese, iron, cobalt and nickel have been characterized but few are capable of activating C–H bonds and/or transferring their nitrene (-NR) group, in part, due to their low-spin nature and ligand-field stabilization energies. Motivated by scrutinizing multiply bonded terminal imido species of iron, we herein report for the first time the synthesis and spectroscopic charaterization of a high-valent iron(V)-imido complex, supported by tetraamido macrocyclic ligand. |
| E-mail |
hswboss@gmail.com |
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119th General Meeting of the KCS